Missionary position
WordNet
noun
(1) A position for sexual intercourse; a man and woman lie facing each other with the man on top; so-called because missionaries thought it the proper position for primitive peoples
WiktionaryText
Etymology
Supposed to have been originated by natives of the Trobriand Islands (who considered it improper)
Noun
- A position for sexual intercourse in which the man and woman face each other, with the man on top.